The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 2004
Filed:
May. 28, 2003
Sunonwealth Electric Machine Industry Co., Ltd., Kaohsiung, TW;
Abstract
A brushless DC motor includes a pole plate, a magnetic pole base, a coil assembly, a circuit board, and a rotor. Each of the pole plate and the magnetic pole base is formed by punching a magnetically conductive plate and includes several pole faces and a magnetically conductive tube, with the respective pole faces being annularly located around the respective magnetically conductive tube. The magnetically conductive tube of the magnetic pole plate and the magnetically conductive tube of the pole base are securely mounted one around the other to form an axle tube. At least one bearing is received in the axle tube for rotatably holding a shaft of the rotor. The pole faces of the magnetic pole base and the pole faces of the pole plate are alternately disposed and located around the axle tube.